Manual Growing lights
level of pollination
Two types of frames have been designed, one for 12 bumblebee hives and one for 4 bumblebee hives.
The hives are positioned with the openings [...] lower in the greenhouse, along the walkway under the gutter
(according to Koppert’s general placement advice).
From week 40 until week 9, it is also important [...] open the hive the following day. Never keep a
hive closed for longer than one day unless additional pollen is fed to the bees.
2.1 When to open and close